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Register to vote Register by 18 June to vote in the General Election on 4 July.
Trosiadau metrig, gwefannau defnyddiol, darllen ychwanegol, cynllun y bathodyn glas a chod ymarfer cerbydau a dynnir gan geffylau.
Near miss at Maesyfelin bridge, near Pontyclun, Rhondda Cynon Taf, 8 April 2016.
Rheolau ar gyfer aros a pharcio, gan gynnwys rheolau am barcio yn y nos a gorfodaeth parcio cyfreithlon.
Marciau ffyrdd a ddefnyddir, gan gynnwys y rhai ar draws y gerbydffordd, ar hyd y gerbydffordd, wrth ymyl y gerbydffordd, ar y cwrb neu ar ymyl y gerbydffordd a marciau ffyrdd eraill.
Signalau a ddefnyddir i ddefnyddwyr eraill y ffordd, gan gynnwys signalau dangosydd cyfeiriad, signalau goleuadau brecio, signalau goleuadau bacio a signalau breichiau.
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